Pump-governor.



No. 687,450. Patented Nov. 2s, mol.4

- n coNHADER PUMP GUVERNUR.

[Application filed Apr. 4, 1901 (No Model.)

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onms PETERS oo.. Pumuu'rnp.. wAsmNcTon. r: c,

UNITED STATES PATENT OFFICE.

RUDOLPH CONRADER, OF ERIE, PENNSYLVANIA.

PUMP-GOVERNOR.

SFECIFI'GATION forming" part of 'Letters Patent No. 687,450, dated November 26, 1901. Application filed April 4, 1901. Serial No. l54,290. (No model.)

To @ZZ whom it may concern:

Be it known that I, RUDOLPH CONRADER, a citizen of the United States, residing at Erie, in the county of Erie and State of Pennsylvania, have invented certain new and useful Improvements in Pump-Governors; and I do hereby declare the following to be a full, clear, and exact description of the inventiongsuch as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to pump-governors; and it consists in certain improvements in the construction thereof, as will be hereinafter fully described, and pointed out in the claims.

More particularly, the invention relates to a type of governor shown in a provious application filed by me on September 10, 1900, Serial No. 29,490. In the application referred to a governor is shown wherein there is a speed-governor and a pressure-governor combined, in which the strength of the cent1-ipetal element is varied by a change in the pressure on the pressure device. In the construction shown in that application there is a compensating mechanism formed by a spring for controlling the action of the pressure device upon the said centripetal element, so that the governor is more sensitive to changes of receiver-pressure.

In the present application I have substituted for the spring compensating device a weighted compensating device having a lever mechanism presenting varying arms as the device moves. .I have also provided a peculiar construction of pressure device and also a peculiar construction of the automatic stop mechanism, as well as details of construction, which will fully appear in the claims.

The invention is illustrated in the aecompanying drawings, as follows:

Figure l shows a section on the line l l in Fig. 2. Fig. 2 shows a section on the'zne 2 2 in Fig. 1. Fig. 3 shows'a detail of the automatic stop mechanism. Fig. 4 shows a detail of the compensating-lever mechanism. Fig. 5 shows a section of a fragment of the device on the line 5 5 in Figs. l and 2.

A marks the valvechamber, and B the valve, which is arranged to operate in the diaphragm a of the valve-chamber as usual. Secured to the valve-chamber A is the frame C by means of a base-plate C. The frame C has the arm c, in which is journaled the driveshaft d, the upright extension c, in which is journaled the rotating carrier of the speedgovernor, and the arm c2, with which the pressure device is connected. Extending upwardly from the valve is the valve-stein b, and a gland a.' is provided, as usual, for this stem. The stem is secured to a lever-bleek b2, and an extension b extends from this block to the speed governor. The governor is driven through a pulley D, which operates the drive-shaft (Z and actuates the gear fl',

This gear d drives the gear e. The gear e is fixed with the rotating carrier E. Centrifugal weights F F are pivoted on the carrier at the points ff below their centers of gravity. A cross-head 3 is secured to the top of the stem b', and links b4 secure the cross-head with the weights.

Pivoted on the pin c3 in the arm c2 is the lever G. This lever is provided with the rounded end g, which operates in the leverblock b2, so as to move with said block, and consequently with the valve B. This lever is provided with the rounded end g', and resting upon it is the nut 7L', which is secured to the. rod h. A nut h3 is secured to the rod h belowthe end of the lever g. The rod h extends through a nut II', and tensioned between lhis nut and an elongated nut h" is a spring II, the spring H being of considerably greater strength than the spring H2. The nut H is secured in a frame I, which extends around and by the springs H2 and H and the lever G, and is provided at its end with a pin I', which rests upon the piston oi' the pressure device. Extending from the frame is a lug t', and secured in this lug is a guide-bolt t". The guide-bolt extends through a lug cl on the arm o2.

A fork-lever .I is pivoted on the pin c3 and passes outside of the frame I. A lever .I' is secured in this fork. Extending downwardly from the fork .I are the arms J 2. 'Ihe links J3 connect the lower ends of the arms J2 with the upper end of the frame I. Secured to the outer end of the lever J is an upright post J4, and adjustably secured on this post by means of set-screws or otherwise is a weight J A cylinder L is passed through a projection C2, extending from the plate C, and is secured in said projection by means of a shoulder Z below said projection and a flange-nut l', screwed onto said cylinder above said projec- ICO tion. Apiston L is arranged in the cylinder and operates against the stem. Below the cylinder L is an oil-chamber. M. Extending upwardly into this chamber is a cylindrical cup m. This cup is provided at its lower end with a small flange m', which rests against the bottom of the chamber M. The cup is secured in place by means of aange-nut m2, embracing said cup and being screwed ont-o the end of the chamber. Operating in this cup is a plunger m3, which forms an extension to the piston L. In assembling the parts the plunger is placed in the cup. This centers it, and the nut mie is then forced to place. Extending through the bottom of the wall of the cup is a minute opening m4. The cup is slightly smaller at the bottom than the chamber M, forming the passage m5 between the cup and the chamber. The plunger m3 is provided with a passage m6, and a minute opening m7 communicates with this passage. This passage is preferably filled with waste or asbestos fibers, and extending from this passage to the surface of the piston L' is a minute passage m8.

A connection 'm9 is made with the pump-receiver. The chamber M preferably carries sufficient oil to fill the cup m.

The operation of the parts of the governor described is as follows: The centripetal governor operates in its usual manner. The piston L being in its lowermost position, the spring H2 is practically ont of operation, so that the centript tal element of the governor is formed by the spring II. This gives to the governor the widest valve-opening with the least speed. When the pressure exceedsa desired minimum, it operates upon the piston L'. An exerting pressure upon the oil in the chamber M forces oil through the minute opening m, and thus operates against the LIL-nger m3. The effect of this is to raise the frame I and reduce the tension of the spring H, thus reducing the centripetal element ot' the governorI and giving to the valve a smaller opening with the same speed, and consequently, or, in other words, speeding the governor down, so as to give to the pumpa slower speed. It will be noted that the piston L is only subjected to the direct air-pressure on a part of its surface, so that it will not operate except through the addition of pressure through the plunger 'm3 and that the pressure on the plunger can only follow the action of the piston as the oil passes through the minute opening m". This prevents any slamming and insuresasmooth even movement. When the parts are returned through a decrease in the receiver-pressure, the same dash-pot effect is obtained. In each one of these actions a sm all quantity of oil is forced into the passage fm and out through the openingms. This escape of oil constantly lubricates the piston L and forms an oil seal between the piston and the cylinder. p

In the manner described in the prior application asthe piston moves upwardly the tensionfof the spring II decreases, and as this spring exerts pressure in the direction of the pressure device a considerable change in connter-pressu re or receiver-pressure is necessary to effect a continued movement of the frame I. In order to neutralize to some extent this change in tension of the centripetal spring, I provide a weighted lever J with the downwardly-extending arms J2. It will be noted that as the frame I moves upwardly the arm J2 is swung outwardly from the pivot c3, thus forming a greater length of arm between the fulcrum and the power and at the same time decreasing the length of the arm between the power and the weight, so that the eect of the weight decreases as the tension on the centripetal spring decreases. In this manner a considerable movement may be effected in the frame I with a very small difference in the receiver-pressure, so that the pump may be controlled so as to give just the necessary speed to furnish a supply equaltothat drawn from the receiver. The effect of the changing arm may also be accomplished by extending the weight J4 a distance above the pivot c3. It will readily be seen that as the weight J 4 is extended above this pivot it swings inwardly with an upward movement of thelever, so as to shorten the arm J. Where the weight is adjusted to the lower end of the post this change is very small. By this means and the arm J2 a very nice adjustment may be accomplished, so that the decrease in tension on the spring H2 may be as nearly compensated for as desirable, and in this way' the governor may be made to effect a speedin the engine which will have a sufficient variation to maintain the receiverpressure within very narrowlimits.

Pivoted on the pin C3 is a stop-lever O. It extends preferably to the opposite side of the machine from the lever J. It is provided with a roll o at its outer end, and extended from this lever is a weight O. A rider-pulley N is arranged to operate upon the belt, as ordinarily with fstop devices. This is car- The arm fn. is secured in ried bj an arm fn." the ring N. The ring N' is clamped on a flange-collar N2 by means of a clamping-bolt n2. Y The flange-collar N2 segmental flange n. In setting the governor the roller o is placed on the ange 'n' and the clamping-spring N loosened. The rider-pulley N is placed upon a belt and the clampring N set up so as to hold itin this position. It the belt shouldbreak, the rider-pulley falls and carries the flange 'n' from under the roller o and allows the lever O to drop. The inner end of the lever has u pwardly-projectin g lugs o', and/a pin o2 extends between these lugs on the lever It will readily be seen that as soon as the lever O is provided with a carried downwardly by the pin o2, and this closes the valve B..

Vhat I claim/as new is-` 1. In a pump-governor, the combination with the governor-valve of a pressure device drops the lever G is IIO lss

actuated by the pumped fluid; a lever mechanism connected with said pressure device; a counterweight connected with said lever mechanism in opposition to the pressure device, said pressure device and counterweight being arranged to operate against each other through said lever mechanism, on arelatively varying arm; and a connecting mechanism between said pressure device and governorranged to operate upon one of the elements of the governor and to present a varying arm to the counterweight and pressure device.

3. In a pump-governor, the combination of aspeed-governor comprisingacentrifugal and a centripetal element; a governor-valve; a pressure device actuated by the pumped fluid; a lever` mechanism connected with said pressure device; a counterweight on said lever mechanism, said lever mechanism being arranged to operate upon one of.V the elements of the governor and to present a varying arm to the counterweight and pressure device to compensate for the variation in co unter-pressure on the pressure device through the action of the speed-governor element.

4. In a pump-governor, the combination of aspeed-governor comprisingacentrifugal and a centripetal element; a governor-valve; a pressure device actuated by the pumped fluid; a lever mechanism connected with said pressure device; a counterweight on said lever mechanism, said lever mechanism being arranged to operate upon the centripetal ele-` ment ofthe governor and to present a varying arm to the counterweight and pressure device.

5. In a pump-governor, the combination with the governor-valve; the centripetal and centrifugal elements; of a pressure device actuated by the pumped fluid; alever mechanism'connected with said pressure device; a counterweight on said mechanism and arranged in opposition to the pressure device, said pressure device and counterweight being arranged to operate against each other through said lever mechanism on a relatively varying arm; and a connectingmechanism between said pressure device and one of the elements of. the governor for varying the strength of one of the elements of the governor relatively to the other of said elements within thelimit of the power exerted by said other element.

6. In a pump-governor, the combination with the governor-valve and the centrifugal and centripet-al elements; ofl a pressure device actuated by the pumped fluid; a lever mechanism connected with said pressure device; a counterweight on said mechanism and arranged in opposition to the pressure device, said pressure device and counterweight being arranged to operate against each other through said lever mechanism on a relatively varying arm; and a connecting mechanism between said pressure device and the centripetal element of the governor, said connecting mechanism being arranged to vary the strength of the centripetal element with a movement of the pressure device within the limits of the power exerted by the centrifugal element.

7. In a pump-governor, the-combination with the governor-valve; a pressure device actuated by the pumped fluid; a pivoted lever connected with said pressure device; a Weight on said lever; an arm extending from said lever out of the line between the pivot and the weight; and aconnection between said arm and said valve, said arm being arranged to vary the lever-arm with a movement of the pressure device.

8. In a pump-governor, the combination with the governor-valve; of a pressure device actuated by the pumped fluid; a pivoted lever connected with said pressure device; a Weight-on said lever; means for adjusting said weight in a vertical direction to vary its movement toward and from the pivot with a movement of the lever; and a connection between said lever and said valve, said connecting mechanism being arranged to influence the action of the governor-valve with a movement of the pressure device.

9. In a pumpgovernor, the combination `with the governor-valve; of a pressure device actuated by the pumped iiuid; a pivoted lever connected with said` pressure device; a weight on said lever; means for adjusting said weight in a vertical direction to vary its movement to and from its pivot with a movement of the lever; an arm extendingfrom said lever out of the line between the pivot and the ICO IIO

Weight; and a connection between said arm and said valve,said connection being arranged to influence said valve with a movement of the lever.

lO. In a pump-governor, the combination of a speed-governor comprising a centrifugal and a ccntripetal element; agovernor-valve; a pressure device actuated by the pumped fluid; a pivoted lever connected with said pressure device; a weight on said lever exerting a coun ter-pressure on the pressure device; an arm extending from said lever out of the line between the pivot and the weight; a Weight between said arm and the pressure device; a connection between the pressure device and the centripetal element of the governor, the said centripetal element being arranged to exert a counter-pressure upon the pressure device, the said variation in the lever-arm tend- 11. In a pump-governor, the combination l operating upon said frame; the pivoted lever,

J; the arm, J2, extending downwardly from said lever out of the line between said lever and the weight; the weight, J 5, on said lever; and a link, J3, connecting the arm, J2, with the frame, I.

12. In a pressure device, the combination of a cylinder; an actuating-piston within said cylinder; an oil-chamber; a plungerextending from said piston; a cylindrical cup in which said plunger operates; a minute 4passage leading from said chamber to said cup for the purpose described.

13. In a pressure device, the combination ofa cylinder; an actuating-piston within said cylinder; an oil-chamber; al plunger extending from said piston; a cylindricalcuplin which said plunger operates; a passage leading from said chamber to said cup; and a passage leading from said cup through the plunger and piston to the surface of the cylinder.

14. In a pressure device, the combination of a cylinder; an actuating-piston within said cylinder; an oil-chamber; a plunger extending from said piston; a cylindrical cup in which said plunger operates; a minute passage leading from said cup through the plunger and piston to the surface of the cylinder.v 15. In-a pressure device, the combination of the cylinder, L; the piston, L'; the oil-chamber, M; a cup extending upwardly in the oilchamber; a plunger extending from the piston into said cup, said plunger and piston being provided with a passage leading from a cup into the surface of the cylinder, the walls of said cup having a passage leadingfrom the oil-chamber into said cup.

16. In a pump-governor, the combination of a regulating-valve; a pressure device actuated by the pumped fluid; a connecting mechanism between said pressure device and said valve, said pressure device comprising a cylinder and a piston operating in said cylinder; an oil-chamber; means whereby the oil may be subjected to the pumped-uuid pressure and for communicating said pressure to the piston, said means comprising a minute opening for eifectng a dash -pot action on the piston. l

17. In a pump-governor, the combination of a centrifugal and a centripetal element; a governor-valve actuated by said elements; a pressure deviceIactuated by the pumped Huid;

sure device and said valve, said pressure device comprising a cylinder and a piston operating in said cylinder; an oil-chamber means whereby the oil may be subjected to the pumped-'duid .pressure and `for communicating-said pressure to the piston, saidV means comprising a minute opening for eecting a ldash-pot action on the piston.

18. In a pump-governor, the combination of a centrifugal and a centripetal element; a governor-valve actuated by said elements; a pressure device arranged to operate upon said centripetal element and to vary the force of said centripetal element within the power of said centrifugal element, said pressure device comprising a cylinder, a piston, an oilchamber, means for subjecting the oil to the pump-pressure and for subjecting the piston to the pressure from the oil-chamber, the movement of the oil in exerting pressure upon the piston being checked by a yminute opening to eect a dash-pot action upon thel piston. A

19. In a pump-governor, the combination of the governor--valve a centrifugal and a centripetal element; a pressure device arranged to operate upon said centripetalv element to vary the force of said element; alever mechanism connected with said pressure device; acounter-prossure mechanism connected with said lever mechanism andoperating against said pressure device 0n a relatively-varying arm, said pressure'de'vice comprising a cylinder, a piston, an oil-chamber, means for subjecting the oi] in the chamber to the pumppressure and conveying the pressure through the oil to the piston and means for checking.

the movement of oil with a movement of the piston to eect a dash-pot action on the piston.

20. In a pump-governor, the combination with the centri petal and centrifugal elements;

a governor-valve actuated by said elements;

a pressure device; a connecting mechanism between the pressure device and the valve, comprising a lever, G; the lever, O, having the lugs, 0'; cross-pin, o2; weight, O', on the lever, O; a rider-pulley; an arm extending from said rider-pulley to a means for normally sustaining the arm, O, said means being arranged to drop the arm, O, upon a movement of the rider-pulley out of its normal path.

21. In agovernor,thecombinationofmeans for supporting an automatic stop mechanism; a clamping-ring, N', arranged on said means; a rider-pulley, N, carried by said clampingring, whereby said rider-pulley may be adjusted to any angle of belt.

22. In a governor, the combination of the rider-pulley, N; the arm, n; clamping-ring, N; the Iiange-ring, N2, on which the clamping-ring is arranged; the liange, n', on the flange-ring; and the automatic stop-arm, O,

yarranged on the iiange, n'. a connecting mechanism between said pres- In testimony whereof I aix my signature in presence of two witnesses.

RUDOLPH CON RADER. Witnesses:

R. F. LANZA, M. A. LORD.

IIO 

